Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/WorkerThread.java @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
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| rev | line source |
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| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2000, 2001, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.utilities; | |
| 26 | |
| 27 /** This class abstracts the notion of a worker thread which is fed | |
| 28 tasks in the form of Runnables. */ | |
| 29 | |
| 30 public class WorkerThread { | |
| 31 private volatile boolean done = false; | |
| 32 private MessageQueueBackend mqb; | |
| 33 private MessageQueue mq; | |
| 34 | |
| 35 public WorkerThread() { | |
| 36 mqb = new MessageQueueBackend(); | |
| 37 mq = mqb.getFirstQueue(); | |
| 38 new Thread(new MainLoop()).start(); | |
| 39 } | |
| 40 | |
| 41 /** Runs the given Runnable in the thread represented by this | |
| 42 WorkerThread object at an unspecified later time. */ | |
| 43 public void invokeLater(Runnable runnable) { | |
| 44 mq.writeMessage(runnable); | |
| 45 } | |
| 46 | |
| 47 /** Can be used to dispose of the internal worker thread. Note that | |
| 48 this method may return before the internal worker thread | |
| 49 terminates. */ | |
| 50 public void shutdown() { | |
| 51 done = true; | |
| 52 mq.writeMessage(new Runnable() { public void run() {} }); | |
| 53 } | |
| 54 | |
| 55 class MainLoop implements Runnable { | |
| 56 private MessageQueue myMq; | |
| 57 | |
| 58 public MainLoop() { | |
| 59 myMq = mqb.getSecondQueue(); | |
| 60 } | |
| 61 | |
| 62 public void run() { | |
| 63 while (!done) { | |
| 64 Runnable runnable = (Runnable) myMq.readMessage(); | |
| 65 try { | |
| 66 runnable.run(); | |
| 67 } catch (Exception e) { | |
| 68 e.printStackTrace(); | |
| 69 } | |
| 70 } | |
| 71 } | |
| 72 } | |
| 73 } |